Chaeles la dow



(No'Model.)

C. LA DOW.

PULVERIZER.

No. 375,365. Patenta Dec. 27, 1887..

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www l Nv PETERS Phmmumagmpmr. wmingmr D a 'UNITED STATES PATENT OFFICE.

CHARLES LA DOW, OF ALBANY, NEW YORK.

PULVERIZER.

SPECIFICATION forming part of Letters Patent No. 375.365, dated December2'7, 1887.

i Application filedDccemhcrSl,18S6. Serial No. $223,202. (No model.)

To all whom, it may concern:

Be it known that I, GHARLEs LA Dow, of the city of Albany, county ofAlbany, and Stateof New York, have invented a new and useful Improvementin Pulverizers, of which the following is a specification.

My invention relates to that class of pulverizers which employs spiralor screw cutters twisted in cross-section in the shape of right and lefthand auger-blades, and arranged in two gangs, which are adapted tocounteract the endthrusts of each other.

In the drawings, Figurel represents a top view of my invention, showingby dotted lines a seeder-boX supported over and between the gangs. tion,showing by dotted lines that the ends of the spiral-cutter gangs mayvibrate up and down independently of each other; also showing the methodof mounting the seeder-boX relatively to the gang. Fig. 3 represents aperspective view of an end of one of the blades after being twisted intoauger shape; also showing Vthe attached j ournal-bearing. Figs. 4, 5, 6,and 7 represent end views of the sheets of metal from which theanger-blades are twisted, in which views (in cross-sections) it will beobserved that sharp edges are rolled into the sheets of metal on eachside thereof, so that when the said sheets are twisted they are alsoleft sharpened their entire'length. Fig. 4, in cross-section, representsa sheet of metal rolled thickest at its middle and tapering in eachdirection therefrom to its edges. Fig. 5 represents a sheet of metal incross-section of uniform thickness, with its edges beveled. Fig. 6represents an end view of a sheet of metal having ribs rolled thereonlengthwise of the same to form a solidaXle the entire length of thegang, so that when twisted the gang will be very rigid'in cross-section.The ribs may also be extended beyond the ends of the blades v andadapted to form vjournal bearings therefor. Fig. 7 represents an endview of a sheet of metal having a depression rolled into one sidethereof to stiffen the blade in cross scction.

In the drawings, A represents the draftfrane of the machine, and et adraft-hooks, t'o

either of which the draft animals may be at- Fig. 2 is an end view 0f myinven.

tached, so as to draw the machine in either direction.

B and B are the gangs of spiral cutters, which are twisted in the shapeof angers in such manner that one gang shall thrust the earth to theright and the other gang to the left as the machine is drawn forward,and thus adapt the machine to travel in a direct line.

J ournal-bearings b b may be fastened to the ends of the spiral blades,as shown at c in Fig. 3. These journal-bearings are attached to thedraft -frame in slots n inl such manner that either end of either gangmay vibrate up and down independently of its fellow gang. Any otherpreferred form of attaching the gang to the draft-frame may be used, ifdesired.

It will be observed that one gang is shorter than the other, and thatthe machine can be drawn equally well from either of the drafthooks a a.This construction adapts the machine to work equally Well on all kindsof soil, as if the ground be very hard the short gang should be drawn infront of the other, and this position reversed if the ground be soft atthe first time going over it.

S represents a box for receiving grain or phosphate, and may be of anywell-known construction and operated by a chain belt, as shown in thedrawings, or by other means, and may be mounted on the frame, eitherbetween the gangs or above them, as may be desired.

It will be observed that the gangs, being arranged directly across theline of draft, leave no ridge-or furrow the entire width of the machine,so thatall the ground is thoroughly broken and stirred at one transit ofthe machine. It will also be observed that in the arrangement shown of aSpeeder depositing the grain or phosphate between the gangs affords agreat advantage to the methods heretofore used for depositing the seedin the ground,in asmuch as the preceding gangv preparesthe ground forthe proper reception of seed and ICO rolled that both edges of saidsheets are sharpened when the metal is rolled, and that when the gangsare twisted the edges are also twisted at the same time. This gives acontinuous double edge, which entwines one around the other the entirelength of the gangs and is very easily and cheaply produced.

The draft-frame A may be made in other forms, and, if desired, thespiral gangs maybe mounted therein in other ways, and may be madeangularly adjustable relatively to cach other.

A draft-pole may be attached to the draftframe A at either side thereof;but I prefer the construction here shown.

By reference to the drawings it will be observed that G in Figs. 4, 5,6, and 7 represents end views or cross-sections of various styles inwhich the sheets may be rolled for the gangs, while G in Fig. 3represents a perspective view of Fig. 5 after being twisted, while B Bin Fig. 1 represents the complete gangs afterbeing twisted from themetal rolled, as shown in Fig. 5.

In another application, tiled by ine .Iannary G, 1887, No. 223,616, isshown a machine somewhat similar to that herein illustrated, and Idisclaim in this case any subject-matter claimed in said application.

Having thus described my invention, I claim- 1. In a pulverizer, twospiral gangs of oppositely-twisted solid blades of metal adapted tocounteract the side thrusts of each other on their draft-frame.

2. In a pulverizer, a twisted spiral cutter formed of a blade of sheetmetal rolled with both edges sharpened and adapted to be twistedspirally in such form as shall present parts of both said edgessimultaneously to the soil, in combination with a draft-frame forsupporting the blade in position.

In a pulverizer, two gangs of revolving cutters twisted from sheetmetal, arranged one in front of the other and adapted to throw the earthin opposite directions, in combination with a draft-frame attacheddirectly to the ends of the gang-blades.

4. In a pulverizer, two gangs of oppositelyacting serew-cutters adaptedvto vibrate independently of each other in a vertical direction, incombination with adraft-frame which supports the cutters insubstantially parallel planes relatively to each other while operatingto turn the soil in opposite directions to each other.

5. As a new article of manufacture, a pnlverizer-blade formed incross-section of sheet metal rolled substantially as shown in Figs. 4,5, (i, or 7, and having an auger-shaped twist, substantially as shown inFig. 3, adapted to give said blade a spiral shear cut when revolvingeither directly or obliquely across the line of draft.

6. In a pulverizcr, two gangs of oppositelyacting screw-cutters, incombination with a draft-frame adapted to support one gang in rear ofthe other while turning furrows across the path of the machine.

7. In a pulverizer, two gangs of opposing spiral cutters, each gangbeing made of sheet metal and twisted, as shown, the screw of eachcutter being adapted to rotatein an opposite direction to its fellow bytraetional contact with the ground.

8. In a pnlverizer, two gangs of oppositely acting and revolvingcutters, which move the soil laterally in opposite directions, and arearranged to leave no furrow or ridge between their ends, and a seedingdevice adapted to discharge the grain so as to be covered by the soilturned by the eutters,in combination with a frame adapted to support aseeder and eutters.

9. In a pulverizer, a sheet of metal rolled with a bevel on oppositeedges thereof and twisted spiral] y, as sh own, in combination with adraft-frame, in which it is mounted at two points to permit itsrevolution.

10. In a pulverizer, a metal cutter having a strengtl1ening-rib,enlargement, or groove on one side thereof, in combination with thespiral cuttingedges surrounding said rib or en largement.

11. In a pnlverizcr, a sheet of metal rolled thinnest at its edges, incombination with spiral curves, substantially as shown, which adapt theinner thicker portions of the blade to strengthen the edges of thecutter transversely.

12. Ina pulverizer, two independently-revolving gangs of spiral cuttershaving a continuous cutting-edge the entire length of the gang, one gangadapted to follow the other and turn the soil in a direction opposite to.that in which it was turned by the preceding gang, in combination witha draft-frame.

13.v In a pulverizer, a gang of spiral cutters formed of a blade ofsharpened twisted metal, in combination with the journal-bearingd,attached to the gang, substantially as shown.

14. In a pulverizer, two gangs of spiral cutters adapted to turn theearth in opposite directions, one gang following the other, a draftframein which they are mounted, and connections between the frame and gangswhich permit an end of the front gang to lraise without raising thecorresponding end of its fellow gang- 15. In a pulverizer, twoindependently moving or vibrating gangs of spiral cutters adapted toturn the earth in opposite directions, and each gang arranged atsubstantially a right angle to the line of draft, in combination with adraft-frame.

16. In a pulverizer, two independent gangs of spiral cutters adapted toturn the earth in opposite directions, and each gang arranged atsubstantially a right angle to the line of draft, in combination with adraft frame adapted to be drawn from either end.

17. In a pulverizer, two independent gangs of spiralv cutters, one gangbeing longer than the other, said gangs being adapted to turn IIO IIS

the earth inl opposite directions, in combna- 20.y Inapulverizer,areversible draft-frame, tion with a draft-frarne. aseed-distributing box mounted thereon, in 18. In a pulverizer, thecombination of the combination with two gangs of cutters, one frame A,spiral gang B, and oppositely-twisted arranged in advance of the other,said gangs spiral gang B', arranged one in advance of the being adaptedto maintain the seed-box in an other. upright position While the draftis being ap 19.. In a p ulverizer,a draft-frame,two gangs plied to theopposite end of the machine. of revolving cutters adapted to turn theearth CHARLES LA DOW. laterally 1n opposite dlrections, arranged one inadvance of the other, in combination with seeding devices adapted todischarge the grain between said gangs.

Vitnesses:

CHAS. H. MILLS, GEORGE TIFFANY.

